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Macrostrat
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Siphonodella praesulcata
630
Type
Zone
Age range
360–358.86
Ma
International Timescale
Mississippian
Tournaisian
Late Devonian
Famennian
Conodont Zonation
Siphonodella sulcata
Siphonodella praesulcata
Palmatolepis gracilis expansa
360.1
360.0
359.9
359.9
359.9
359.8
359.8
359.7
359.6
359.6
359.6
359.5
359.4
359.4
359.4
359.3
359.3
359.2
359.1
359.1
359.1
359.0
358.9
358.9
358.9
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